USART1串口实验

lh182

[mw_shl_code=c,true]#include "stm32f10x.h" #include "sys.h" #include "delay.h" #include "usart.h" #include "stm32f10x_tim.h" #include "stm32f10x_usart.h" void Delay(u32 count) { u32 i=0; for(;i<count;i++); } void RCC_Configuration(void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); } void GPIO_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //TX GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //RX GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure); } void USART_IRQHandler(void) { if(USART_GetITStatus(USART1,USART_IT_RXNE)==SET) { USART_SendData(USART1,USART_ReceiveData(USART1)); while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET); } } void USART_Configuration(void) { USART_InitTypeDef USART_InitStructure; USART_InitStructure.USART_BaudRate=9600; USART_InitStructure.USART_WordLength=USART_WordLength_8b; USART_InitStructure.USART_StopBits=USART_StopBits_1; USART_InitStructure.USART_Parity=USART_Parity_No; USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None; USART_InitStructure.USART_Mode=USART_Mode_Rx|USART_Mode_Tx; USART_Init(USART1, &USART_InitStructure); USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); USART_Cmd(USART1,ENABLE); USART_ClearFlag(USART1,USART_FLAG_TC); } void NVICInit(void) { NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel =USART1_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =3; NVIC_InitStructure.NVIC_IRQChannelSubPriority =3; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } int main(void) { delay_init(); RCC_Configuration(); GPIO_Configuration(); NVICInit(); USART_Configuration(); USART_IRQHandler(); uart_init(9600); while(1); }[/mw_shl_code] [mw_shl_code=c,true]怎么发送不了数据呢？[/mw_shl_code]

正点原子

你这代码写的也是奇葩。
请参考下我们的串口实验。